Skip to main content
SpringerLink
Log in

Complex action potentials of secondary neurons of the rat olfactory bulb

  • Published:
Neurophysiology Aims and scope

Abstract

Complex action potentials arising spontaneously or evoked by stimulation of the lateral olfactory tract in secondary neurons of the rat olfactory bulb were recorded. The amplitude and duration of the complex potentials varied depending on synchronization of onset of the individual components (of which more than four were distinguished) and their combination. It is suggested that complex potentials were recorded in cases when the electrode was located in the region of the junction between spike-generating zones (the branching node of the dendrite, the junction of the soma with the dendrites and axon). It is concluded that there are numerous generating zones in the dendrites of the secondary olfactory neurons. Evoked action potentials appeared after the following latent periods: first, about 1 msec; second, about 2 msec; and third, about 3 msec. The results of the analysis showed that the antidromic response appeared after the shortest latent period. These results are evidence of the existence of considerable and varied representation of excitatory synapses in secondary neurons (besides the excitatory input in the olfactory glomeruli).

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Literature cited

  1. G. S. Voronkov, K. G. Gusel'nikova, and G. V. Torgovanova, "Unit activity of the rat olfactory bulb not coming out into the axon," Zh. Vyssh. Nerv. Deyat.,25, 634 (1975).

    Google Scholar 

  2. G. S. Voronkov and G. V. Torgovanova, "Testing spontaneous spike activity by a synaptically evoked spike," Zh. Vyssh. Nerv. Deyat.,25, 1327 (1975).

    Google Scholar 

  3. G. S. Voronkov, K. G. Gusel'nikova, and G. V. Torgovanova, "Generation of spike activity by dendrites of secondary neurons of the rat olfactory bulb," Neirofiziologiya,8, 283 (1976).

    Google Scholar 

  4. E. Kandel and W. Spencer, "Electrophysiological properties of neurons of the paleocortex," in: Current Problems in Electrobiology [Russian translation], Mir, Moscow (1964), pp. 241–276.

    Google Scholar 

  5. K. N. Andres, "Der Feinbau des Bulbus olfactorius der Ratte unter besonderer Berücksichtigung der synaptischen Verbindungen," Z. Zellforsch. Mikrosk. Anat.,65, 530 (1965).

    Google Scholar 

  6. J. C. Eccles, B. Libet, and R. R. Young, "The behaviour of chromatolysed mononeurones studied by intracellular recording," J. Physiol. (London),143, 11 (1958).

    Google Scholar 

  7. P. Fatt, "Electric potentials occurring around a neurone during its antidromic activation," J. Neurophysiol.,20, 27 (1957).

    Google Scholar 

  8. Y. Fujita, "Activity of dendrites on single Purkinje cells and its relationship to so-called inactivation response in rabbit cerebellum," J. Neurophysiol.,31, 131 (1968).

    Google Scholar 

  9. J. D. Green, M. Mancia, and R. Baumgarten, "Recurrent inhibition in the olfactory bulb. 1. Effects of antidromic stimulation of the lateral olfactory tract," J. Neurophysiol.,25, 467 (1962).

    Google Scholar 

  10. W. Hild and I. Tasaki, "Morphological and physiological properties of neurons and glial cells in tissue culture," J. Neurophysiol.,25, 277 (1962).

    Google Scholar 

  11. K. Mori and S. F. Takagi, "Spike generation in the mitral cell dendrites of the rabbit olfactory bulb," Brain Res.,100, 685 (1975).

    Google Scholar 

  12. R. A. Nicoll, "Identification of tufted cells in the olfactory bulb," Nature,227, 623 (1970).

    Google Scholar 

  13. R. A. Nicoll, "Recurrent excitation of secondary olfactory neurons: a possible mechanism for signal amplification," Science,171, 824 (1971).

    Google Scholar 

  14. J. Ochi, "Olfactory bulb response to antidromic olfactory tract stimulation in the rabbit," Jap. J. Physiol.,13, 113 (1963).

    Google Scholar 

  15. A. J. Pinching and T. P. S. Powell, "The neuropil of the periglomerular region of the olfactory bulb," J. Cell Sci.,9, 379 (1971).

    Google Scholar 

  16. J. L. Price and T. P. S. Powell, "The mitral and short axon cells of the olfactory bulb," J. Cell Sci.,7, 631 (1970).

    Google Scholar 

  17. C. G. Phillips, T. P. S. Powell, and G. M. Shepherd, "Responses of mitral cells to stimulation of the lateral olfactory tract in the rabbit," J. Physiol. (London),168, 65 (1963).

    Google Scholar 

  18. W. Rall, G. M. Shepherd, T. S. Reese, and M. W. Brightman, "Dendrodendritic synaptic pathway for inhibition in the olfactory bulb," Exp. Neurol.,14, 44 (1966).

    Google Scholar 

  19. P. J. Spear, "Evidence for spike propagation in cortical dendrites," Exp. Neurol.,35, 111 (1972).

    Google Scholar 

  20. E. L. White, "Synaptic organization in the olfactory glomerulus of the mouse," Brain Res.,37, 69 (1972).

    Google Scholar 

  21. T. J. Willey, "The ultrastructure of the cat olfactory bulb," J. Comp. Neurol.,152, 211 (1973).

    Google Scholar 

  22. C. Yamamoto, T. Yamamoto, and K. Iwama, "The inhibitory systems in the olfactory bulb studied by intracellular recording," J. Neurophysiol.,26, 403 (1963).

    Google Scholar 

Download references

Authors
  1. G. S. Voronkov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. G. V. Torgovanova
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

M. B. Lomonosov Moscow State University. Translated from Neirofiziologiya, Vol. 8, No. 6, pp. 575–582, November–December, 1976.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Voronkov, G.S., Torgovanova, G.V. Complex action potentials of secondary neurons of the rat olfactory bulb. Neurophysiology 8, 433–438 (1976). https://doi.org/10.1007/BF01063580

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01063580

Keywords

Search

Navigation